Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 260850
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
250 AM CST FRI DEC 26 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN.

WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS...WHICH
IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES...ALONG
WITH THE AVERAGE HEIGHT OF THE HIGHEST 10 PERCENT OF THE WAVES
WHICH WILL OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS...HIGH PRESSURE OF 30.3 INCHES STRETCHED FROM NORTHERN
FLORIDA TO THE UPPER OHIO VALLEY WILL MOVE EASTWARD FRIDAY AND OFF
THE EAST COAST SATURDAY. A WEAK COLD FRONTAL TROUGH EXTENDS FROM
CENTRAL ONTARIO TO LOW PRESSURE OF 29.7 INCHES OVER CENTRAL KANSAS.
THIS LOW WILL FURTHER WEAKEN AS THE TROUGH MOVES TOWARD THE WESTERN
LAKES FRIDAY. ANOTHER AREA OF LOW PRESSURE OF 29.9 INCHES WILL
DEVELOP ALONG THE FRONT OVER MISSOURI FRIDAY NIGHT AND MOVE ACROSS
CENTRAL LAKE MICHIGAN SATURDAY...DEEPENING TO 29.6 INCHES AS IT
MOVES INTO QUEBEC SATURDAY EVENING AND DRAGGING THE COLD FRONT
SOUTHEAST OF THE LAKE. WEAK HIGH PRESSURE OF 30.2 INCHES WILL MOVE
ACROSS THE SOUTHERN LAKES SUNDAY...WHILE ANOTHER WEAK TROUGH SAGS
ACROSS THE LAKE FROM THE NORTH. THIS TROUGH AND ITS COLD FRONT
WILL MOVE SOUTH OF THE LAKE BY MONDAY...AS STRONG CANADIAN HIGH
PRESSURE OF 31.2 INCHES SPREADS SOUTHEAST INTO THE NORTHERN HIGH
PLAINS.

LMZ261-362-364-366-563-565-567-868-261700-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
250 AM CST FRI DEC 26 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.TODAY...SOUTHWEST WINDS 10 TO 20 KT EASING TO 10 TO 15 KT THROUGH
THE MORNING. SLIGHT CHANCE OF SNOW SHOWERS. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.
.TONIGHT...WEST WINDS 5 TO 10 KT BECOMING NORTHWEST LATE IN THE
EVENING...THEN BECOMING NORTHEAST AFTER MIDNIGHT AND INCREASING
TO 10 TO 15 KT. SLIGHT CHANCE OF RAIN OR SNOW OVERNIGHT. WAVES 2
TO 4 FT SUBSIDING TO 1 TO 2 FT OVERNIGHT.
.SATURDAY...NORTHEAST WINDS 10 TO 15 KT BECOMING NORTHWEST 10 TO
20 KT IN THE AFTERNOON. RAIN OR SNOW SHOWERS LIKELY. WAVES 1 TO 3
FT BUILDING TO 2 TO 4 FT.
.SATURDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SNOW
SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KT. CHANCE OF SNOW SHOWERS.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT...SUBSIDING TO 2 TO 4 FT.
.SUNDAY NIGHT...NORTH WINDS 10 TO 15 KT. CHANCE OF SNOW SHOWERS.
WAVES 1 TO 3 FT.
.MONDAY...NORTH WINDS 10 TO 20 KT. CHANCE OF SNOW SHOWERS. WAVES
2 TO 4 FT.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SNOW SHOWERS.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-261700-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
250 AM CST FRI DEC 26 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TODAY...SOUTHWEST WINDS TO 30 KT EARLY THIS MORNING...THEN 15 TO
25 KT BY MID MORNING...BECOMING SOUTH 10 TO 20 KT THIS AFTERNOON.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT THIS AFTERNOON.
.TONIGHT...SOUTH WINDS 10 TO 20 KT. CHANCE OF RAIN AND DRIZZLE
OVERNIGHT. WAVES SUBSIDING TO 2 TO 4 FT.
.SATURDAY...SOUTH WINDS 10 TO 20 KT BECOMING WEST 15 TO 25 KT IN
THE AFTERNOON. SHOWERS LIKELY IN THE MORNING. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SATURDAY NIGHT...NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT OVERNIGHT. SLIGHT CHANCE OF RAIN OR SNOW SHOWERS. WAVES 4
TO 6 FT OCCASIONALLY TO 8 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT
IN THE AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING
TO 2 TO 4 FT IN THE AFTERNOON.
.SUNDAY NIGHT...NORTHWEST WINDS 5 TO 10 KT BECOMING NORTH. SLIGHT
CHANCE OF SNOW SHOWERS. WAVES 1 TO 3 FT.
.MONDAY...NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT IN
THE AFTERNOON. CHANCE OF SNOW SHOWERS. WAVES 1 TO 2 FT BUILDING
TO 2 TO 4 FT IN THE AFTERNOON.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SNOW SHOWERS.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.

$$

LMZ761-261700-
MAFOR 2610/
MICHIGAN NORTH 14510 12600 11800 11110. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT TONIGHT AND TO 1 TO 2
FT OVERNIGHT.

MICHIGAN SOUTH 11540 12530 14420 11420. CHANCE OF RAIN AFTER MIDNIGHT
TONIGHT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5
FT OCCASIONALLY TO 7 FT TONIGHT.

$$

KMD






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